Patent US3818576A successfully refreshed from Google Patents.
US3818576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing v belts
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1972-09-28
•
Granted: 1974-06-25
•
Expires: 1992-09-28
Abstract
Abstract A cylindrical cured cord reinforced rubber sleeve is rigidly supported on rotatable, expandable mandrel, the mandrel is rotated about is longitudinal axis, a plurality of rotating grinding wheels are passed by the peripheral surface of the mandrel in a direction perpendicular to the longitudinal axis of the mandrel and engage the sleeve to cut peripheral grooves in the sleeve, and a plurality of rotating cutting blades pass the peripheral surface of the mandrel in a similar manner to sever the sleeve into a plurality of V belts.
Inventors
- 👤 W Braden
- 👤 R Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:22
CPC Classifications
F; F16; F16G; F16G5/00; B; B23; B23P; B23P13/00; B24; B24B; B24B27/00; B24B27/06; B29; B29D; B29D29/00; B29D29/10; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49789; Y10T29/49792; Y10T29/49798; Y10T29/49995; Y10T29/49996
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
82 words
A method of forming a plurality of endless V belts from a vulcanized cylindrical sleeve of cord reinforced elastomeric material comprising rigidly supporting said sleeve in a cylindrical configuration, rotating said sleeve about its longitudinal axis, and providing relative movement between a plurality of grinders and said rotating sleeve in a direction perpendicular to the rotational axis of said sleeve to engage said sleeve with said grinders and grind a plurality of peripheral grooves in said sleeve and form said V belts.
Claim 2
Independent Claim
82 words
A method of forming a plurality of endless V belts from a vulcanized cylindrical sleeve of cord reinforced elastomeric material comprising rigidly supporting said sleeve in a cylindrical configuration, rotating said sleeve about its longitudinal axis, and providing relative movement between a plurality of grinders and said rotating sleeve in a direction perpendicular to the rotational axis of said sleeve to engage said sleeve with said grinders and grind a plurality of peripheral grooves in said sleeve and form said V belts.
Claim 3
Dependent Claim
25 words
A method as claimed in claim 1, further including cutting the base of said grooves to sever said sleeve into a plurality of endless belts.
References Cited (Backward Citations)
US826104A
Cited
US1049255A
Cited
US2321421A
Cited
US2661579A
Cited
US2907101A
Cited
US3477895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |